Wasn't this the design that Wards used for their TLs in the late 50s? Fiberglass tub and separate aluminum agitator? They were ride-or-die Westinghouse, but not everyone wanted a FL.
I guess this was the first major appliance company for what was to become WCI. Several years before they bought Gibson, Kelvinator, Hamilton, Westinghouse, and Frigidaire.